This day in sports history: Yankees great Lou Gehrig hits first
Baseball quiz: On July 4, remember Lou Gehrig - Chicago Sun-Times
Lou Gehrig, Biography, Statistics, Disease, & Facts
National Pastime Museum: LOU GEHRIG APPRECIATION DAY AT 75 – Marty Appel
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Yankees legend Lou Gehrig ends his streak at 2,130 games in 1939 – New York Daily News
This day in sports: Yankees great Lou Gehrig ends his ironman streak
Lou Gehrig TBR News Media
Suffolk Sports Hall of Fame placing marker where Babe Ruth, Lou Gehrig played Lindenhurst game - Newsday
Aaron Judge makes Yankees history with second 3-HR game of the season
Lou Gehrig and the History of ALS